1) singleton modification needed in clustered env.
2) https 443 works
3) in process memory cache
4) permsize in java memeory
5) n+1 problem in hibernate
6) bean cycle in spring
7) strategy and command pattern
8) Struts 2 vs Struts 1
9) JSF lifecycle
10) out of memory solution
11) connection pool work
12) CM Db work.
13) Maven usage, diff with ant, POM pattern work on.
14) sync vs async web services
15) rest full statefull services
16) no cookies, url fwd, 80 port dependent, hidden variable proof, noop proof, cross cache system
17) Design ( component off the case study, sub component, functionalities, data flow diagram )
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